just got my new truck today.. 2002 fx4 f-150 lariat 5.4l.. thinkin bout gettin 40 series flowmasters with the cats cut off angled out that back.. or either runnin straight pipes... i want it to be loud but i dont no if i want it as loud as stright pipes will be... should the 40's with cats cut out be good enough and have a nice loud rumble or either just go the cheap way and run straights which might sound like s***????or is there any other mufflers i should look into???

 

i wouldnt go straightpipes that would be too hillbilly and it might mess with your truck.. if you go with a 40 series muffler, you will have a nice deep growl. and it wont be overwhelming at cruising speed. all in all i think the flowmaster. or a similar brand would be your best bet.

 

should i get the original 40 series or the super 40.. i think im goin to go with super 40 becuz ive heared they are better but dont no yet?

 

i like the super 40's it will give you a little more loudness that you are looking for. good luck. lemme know what you decide

 

I just put the original 40 series on my 97 150 4.6. I am very happy. I have the rumble I wanted but it is not to loud in the cab. I noticed it in the cab but it isnt that loud. I have been told if you get the super 40 it is louder in the cab. Which if you do any highway driving that could be quite annoying.

 

i think im goin to go with the super 40s becuz one of my friends have them on his 2000 5.4l and it is what im lookin for

 

good luck with them. are you getting a ful catback. duel exhaust or single ?

 

im goin to get my cats cut out then dual it out the back with the two super 40s with 3.5 inch tips... my friends has them on his chevy 5.7l so maybe it will get the sound he has but i no it wont be the same

 

what will u do about emissions

 

nothin i guess. none of my friends have been checked.. but my cousin has been stopped by the the cops twice and he had straight pipes but all they gave him was a warning both times.. so i aint worry bout it to much

 

i was thinkin... wat if i get my muffler cut out and put a y- pipe there and run the pipes angled out the back with leaving my cats on.. would that sound good or not???

 

I got a flowmaster 40 on my 98 4.6. I just replaced the factory muffler. had to make my own hanger for it. It sounds realllly good at about 2000 rpm, it just growls!! I really like it, people turn and look when i got past, but not loud enough to bother the cops.
And at highway speed i don't really hear it.
I might eventually just put a y pipe behind the muffler and put dual pipes out the back, cuz the muffler is a single out.

 

here is my theory with loudness, why get something really loud when your not even pushing 300 rwhp? i hate when i see a two wheel drive 4.6 thats way louder than me and i can blow his doors off and god forbidd if i grabbed him with a chain! i went with a siso magnaflow because its not stock but it lets everyone know i get only 15 miles to the gallon.

but the key to life is do what you want, your the one making payments.

semper fi

 

Getting rid of the cats on a street truck gains you nothing. If the cat is in good shape, do yourself a favor and leave it in. There's nothing worse than sitting at a red light in the summertime, with all your windows open, and sucking down the fumes from your exhaust! Been there, done that, didn't like it much! You can get that truck plenty loud without taking the cats out. Use a nice muffler with a good size tip and it'll rattle your teeth out if that's what you want.

Personally, I like the sound of the Dynomax Race-Magnum over any of the Flowmasters....

 

i dont no what im goin to do.. i dont want to have to pay a crap loud for some exhaust...